Estimate Division with Compatible Numbers

What would be the best equation to use to ESTIMATE the quotient:

What would be the best equation to use to ESTIMATE the quotient:

What is a compatible number?

• Numbers that are hard to compute with mentally?

• Numbers that are easy to compute with mentally?

• Numbers that are friends with the class.

• Numbers that are cool.

Estimate 237.4 ÷ 6

• 40

• 38

• 26

• 45

What is the best option to use with division?

• Rounding

• Compatible Numbers

Estimate 104.3 ÷ 4.2

What is a good option for a compatible number for 107.2?

Estimate 66.3 ÷ 11

• 7

• 6

• 8

• 9

• 60

• 70

• 80

• 90

Mr. Brooks sells 318 boxes of cookies to 53 different houses. How many boxes of cookies will he deliver to each house?

• 11

• 12

• 6

• 8